Shedding motion for looms.



No. 817,763. PATBNTBD APR. 17, 1906. G. GIUSSANI.

SHBDDING- MOTION POR Looms.

APPLICATION FILED AUGx 16. 1905.

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No. 817,763. PATENTBD APR. 17, 1906.,

G. GIUSSANI. SHEDDING- MOTION FOR LOOMS.

APPLICATION FILED AUG. 16. 1.905.

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` drawn to an enlarged scale, of the mechanism FFIOE GIOVANNI GIUSSANI, OF LONDON, ENGLAND.

SHEDDING IVIOTION FOR LOOIVIS.

Specification of Letters Patent.

Patented April 17, 1906.

Original application filed Iuly 21, 1904-., Serial No. 217,462. Divided and this application filed August 16, 1905. Serial No. 274,391.

To all whom, t may concern:

Be it known that I, GIOVANNI GrUssANr, engineer, a subject of the King of Great Britain and Ireland, residing at 6 Church Gardens, Ealing, London, England, have invented certain new and useful Improvements in Improved Shedding Motions for Looms, of which the following is a specification.

This invention, which originally formed part of my patent application, Serial No. 217,462, dated July 21, 1904, of which this is a division, relates to a shedding motion for looms wherein a pause is required at every shed to allow time for the movement of a heavy shuttle.

In the accompanying drawings, Figure 1 is a side elevation of a loom to which my invention is applied; and Fig. 2 is a detail view,

which produces the pause in the movement of the healds after the formation of each shed.

Referring to Fig. 1, the driving-shaft a of the loom carries a crank b, which is connected by link c with an arm d, which is centered, for

instance, on the shaft of the windingoff drum e. The arm d is connected by a link f with one end of a lever g, whose other end is connected with the rocking shaft h, that determines the crossing of the healds i to formv the sheds in a well-known manner. All this mechanism is old.

My invention consists in the mechanism about to be described for producing the desired pause. The connection between the lever g and the rocking shaft h is through an arm 7c on the latter and a link Z. The arm 7c has an adjustable pin m, which engages in a slot 'n in the link Z. Pivoted independently of each other to the arm k are two levers o p, and pivoted independently of each other to the framework of the loom are two weighted pawls g 7. The levers o p rest against the ends, respectively, of a slot formed by a strap l, fastened to the link l, and the pawls q r rest against pins s in the framework. The position of these parts (shown in Fig. 1) is the central position when the healds are just about to cross each other. Presuming sponds with the formation of the shed.

that the link lis moving to the left, the position of the parts at the end of the present stroke will be that shown in the detail view, Fig. 2. In the course of the movement from the position shown in Fig. 1 the end of the slot n engages the pin m and moves the arm k to the position shown in Fig. 2, which corre- In this position the pawl g catches the end of the arm 7c, and the lever o is in a nearly horizontal position. As the link Znow moves in the opposite direction (that indicated by the arrow in Fig. 2) it raises the lever 0 so that its shorter end strikes strikes against the pawl g and releases the end of the arm c. Thereupon the latter immediately falls, together with the healds, to the central position shown in Fig. l and remains there until the end of the slot n engages with pin m.

Having now particularly described and as-l -certained the nature of my said invention and in what manner the same is to be carried into practical effect, I claim- 1. A shedding motion for a loom comprising an oscillating lever, a rocking shaft, an arm on the said shaft, a connectionbetween the said lever and the said arm, a device adapted to hold the said arm at the end of each oscillation of the said lever and a device adapted to releasethe said arm shortly after the commencement of the next oscillation of the said lever.

2. A shedding motion for a loom comprising an oscillating lever, a rocking shaft, an arm on the said shaft, a pin-and-slot connection between the said lever and the said arm, a pawl adapted tohold the said arm at the end of each oscillation of the said lever and a lever adapted to release the said arm shortly after the commencement of the next oscillation.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GIOVANNI GIUS'SANI.

Witnesses:

JOSEPH MILLARD, W. J. SKERTEN. 

